短切玻璃纤维增强硬质聚氨酯的弹性模量

材料导报, 2009, 23(12): 112-115.

短切玻璃纤维增强硬质聚氨酯的弹性模量

许俊强 ^1, , 全学军 ^2, , 高伟斌 ^3, , 高焕方 ^4, , 吴永 ^5,

1.重庆理工大学化学与生物工程学院,重庆,400050

2.重庆理工大学化学与生物工程学院,重庆,400050

3.四川大学高分子材料工程国家重点实验室,成都,610065

4.重庆理工大学化学与生物工程学院,重庆,400050

5.重庆理工大学数理学院,重庆,400050

基金项目: 国家自然科学基金(50573095) 重庆市自然科学基金(CSTC 2008BB7334) 重庆工学院基金(2007ZD14) 重庆市教委科学基金(KJ090616)

关键词：玻璃纤维 , 硬质聚氨酯 , 力学性能 , 增强

Effect of Short Glass Fiber on the Elasticity Coefficient Properties of Rigid Polyurethane Materials

采用一步法制备玻纤增强硬质聚氨酯的复合材料(RPU).不同长径比的玻纤增强RPU的性能差异显著.长径比为40的玻纤表现出最优的增强性能.当玻纤用量为10%时,长径比为20、40和100的玻纤增强材料的弹性模量分别为9.39MPa、10.5 MPa和9.59MPa,其中长径比为40的玻纤增强材料的弹性模量比未增强的增加了55%,而长径比为20和100的玻纤增强分别为38.7%和41.7%;该材料增强的压缩弹性模量与拉伸弹性模量规律几乎一致.SEM图表明适宜长径比的纤维本身的拉伸强度对增强硬泡塑料的力学性能起到了重要作用.

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